Portable strip soldering station based on Arduino platform Atmege328p

Open sourced by Bilibili up, DCDC-LDO secondary step-down power supply, tc1047 for cold-end compensation, built-in curve fitting calibration function, and supports 65W gallium nitride charger.

Schematic PCB

Data transparent transmission based on MM32W wireless MCU series

Introducing a Bluetooth case - a data transparent transmission application developed based on the MM32W series.

Add a Bluetooth remote control setting circuit to the 4-20mA two-wire passive digital display meter

The RSL10 module is plugged into the self-made optocoupler isolation circuit board, and the entire module is connected in series with the modified target instrument (4-20mA two-wire passive digital display meter) and then connected to the 4- In the 20mA current loop, when the actual working zero current is 4mA, the target instrument displays 4.000mA in the current mode; the overall voltage drop of the circuit board of the work is 2.513V; the changed range or unit is sent to the RSL10 on the circuit of the work through the mobile APP Setting command, the target instrument (currently its own voltage drops by more than 1V) will be changed by Bluetooth remote control to change the setting state, such as switching to different ranges or displaying different measured physical quantity units, etc.

Schematic PCB

Design of bus passenger counting system based on infrared technology

    The system uses TI's MSP430F149 microcontroller as the core controller. This microcontroller has a 16-bit CPU integrated register and constant generator, which can maximize the code efficiency of the microcontroller. It integrates JTAG and supports online programming; two universal full-duplex Serial synchronous/asynchronous communication interface; PWM control output; external interrupt input interface. The microcontroller is responsible for sampling the bus door opening and closing signals, turning on or off the infrared counting module, recording the number of people getting on and off at each bus stop, storing the data on the number of people getting on and off at each bus stop, and transmitting the stored data to the computer.

Schematic PCB

Graduation project based on the design of automatic flower watering system based on 51 microcontroller (including schematic diagram, source program, thesis, etc.)

Contains all design information

Schematic PCB

Design of smoke SMS alarm based on STM32 (program, PCB, schematic diagram)

Detect whether there is smoke and flammable gas in the environment. If the above gases are present, send an alarm text message to the mobile phone.

Schematic PCB

Design of temperature acquisition and alarm system based on STM32 (source program, schematic PCB, etc.)

When the temperature is lower than the set threshold, the corresponding indicator light lights up and the corresponding relay is closed. The relay can drive the load (fan, refrigeration plate, heating tube, etc.). When the temperature is higher than the alarm value, the sound and light alarm will sound. The keys are setting keys, plus key and minus key. The alarm value and temperature control range can be set, the temperature measurement range is 0 to 99.9 degrees Celsius, and the accuracy is 0.1 degrees Celsius.

Schematic PCB

Design based on STM32 imitation Mitsubishi PLC (program + circuit diagram)

Based on STM32 imitation Mitsubishi PLC design, including program and circuit diagram

Schematic PCB

LD3320 speech recognition garbage classification design source program schematic diagram based on STM32

Start by saying the keyword "Trash"

Schematic PCB

License plate recognition control board schematic + 3D PCB

Share license plate recognition control board schematic + 3D PCB

Schematic PCB

Inverter drive circuit diagram + packaging schematic diagram

Special driver for fish machines, with totem variable drive

Schematic PCB

Design of traffic light control system based on microcontroller control

Traffic light control system principle design drawing

Schematic PCB

PCA9450-EVK: PCA9450 Evaluation Kit

Schematic PCB

RDK01DB1563: TEA2016 USB-I2C programming interface

Schematic PCB

KITFS4508CAEEVM: FS4508, System Basis Chip, ASIL B, Linear 0.5 A Vcore, FS1b, LDT, CAN

Schematic PCB

Single phase electricity meter

Schematic PCB

OM15080-JN5189: JN5189 USB dongle for Zigbee and Thread networks

Schematic PCB

DI-153 - 1.25W, low input voltage range power supply for industrial use

Schematic PCB

DI-152 - 3W, ultra-wide range input power supply for industrial applications

Schematic PCB

DER-850 - 240 W LLC CV/CC Battery Charger Power Supply Based on HiperLCS and LinkSwitch-TN

Schematic PCB